Les adjectifs irréguliers

Les adjectifs irréguliers


Like verbs, there are many irregular adjectives in French that change before adding E, S, or ES, and some that don't add those letters at all. Here is a list of common families of irregular adjectives.


1. Adjectives ending in -E

	masculine singular	feminine singular	masculine plural	feminine plural
triste	triste	triste	tristes	tristes

For adjectives that already end in E in their masculine form, no extra E is added for feminine.
*An exception is adjectives that end in É - an extra E is added for feminine.

2. Adjectives ending in -F

	masculine singular	feminine singular	masculine plural	feminine plural
sportif	sportif	sportive	sportifs	sportives

For these adjectives, the F changes to a V in feminine forms before the E is added.

3. Adjectives ending in -EUX

	masculine singular	feminine singular	masculine plural	feminine plural
sérieux	sérieux	sérieuse	sérieux	sérieuses

For these adjectives, the X changes to an S in feminine forms before the E is added. Also, the masculine singular and plural forms are identical - no S is added.

4. Adjectives ending in -l/-n

	masculine singular	feminine singular	masculine plural	feminine plural
gentil	gentil	gentille	gentils	gentilles
bon	bon	bonne	bons	bonnes

For these adjectives, the N or L is doubled in feminine forms before the E is added.

5. Other irregular adjectives

	masculine singular	feminine singular	masculine plural	feminine plural
beau	beau	belle	beaux	belles
nouveau	nouveau	nouvelle	nouveaux	nouvelles
vieux	vieux	vieille	vieux	vieilles
fou	fou	folle	fous	folles
blanc	blanc	blanche	blancs	blanches
ce	ce	cette	ces	ces

These adjectives don't follow a set pattern or have a family, but they are important to know.